Use the form below to do your conversion.
Solution
Step1
Log20665=Log(665) ÷ Log(20)
Log(665)= 2.8228216453031
Log(20)=1.301029995664
Log20665=2.8228216453031 ÷ 1.301029995664
Ans=2.1696822169442
Step2
Alternatively, the logarithm can be calculated like this.